MAKE A MEME View Large Image The modern blackboard was patented in 1823, by Samuel Reed Hall, who founded Concord Academy in Vermont. The modern blackboard was patented in 1823, by Samuel Reed Hall, who founded Concord Academy in Vermont.
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Keywords: blackboard chalkboard The modern blackboard was patented in 1823, by Samuel Reed Hall, who founded Concord Academy in Vermont. The modern blackboard was patented in 1823, by Samuel Reed Hall, who founded Concord Academy in Vermont.
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